⬆️ Upgrade lib : nikic/php-parser

We were on v3 that is no longer maintained and compatibility is annonced for PHP 7.2.
v4 is active and supports PHP up to 8.0
No problem to update as this is only used in the config editor (\Combodo\iTop\Config\Validator\iTopConfigAstValidator)

lib/nikic/php-parser/lib/PhpParser/Parser.php

@@ -1,8 +1,9 @@
-<?php
+<?php declare(strict_types=1);
 
 namespace PhpParser;
 
-interface Parser {
+interface Parser
+{
     /**
      * Parses PHP code into a node tree.
      *
@@ -10,8 +11,8 @@ interface Parser {
      * @param ErrorHandler|null $errorHandler Error handler to use for lexer/parser errors, defaults
      *                                        to ErrorHandler\Throwing.
      *
-     * @return Node[]|null Array of statements (or null if the 'throwOnError' option is disabled and the parser was
-     *                     unable to recover from an error).
+     * @return Node\Stmt[]|null Array of statements (or null non-throwing error handler is used and
+     *                          the parser was unable to recover from an error).
      */
-    public function parse($code, ErrorHandler $errorHandler = null);
+    public function parse(string $code, ErrorHandler $errorHandler = null);
 }